Gostaria que a bike tivesse a speed base do jogador + uma certa quantidade.

SCRIPT:

function onUse(cid, item, fromPosition, itemEx, toPosition)
local sBike = 2547
local t = {
[16689] = {article='a', name='Bike', text='', dtext='', s=9999, condition=bikeCondition},
}
function BikeSpeedOn(cid,nSpeed)
setPlayerStorageValue(cid,sBike,getCreatureSpeed(cid))
doChangeSpeed(cid,-getCreatureSpeed(cid))
doChangeSpeed(cid,nSpeed)
end
function BikeSpeedOff(cid)
doChangeSpeed(cid,-getCreatureSpeed(cid))
doChangeSpeed(cid,getPlayerStorageValue(cid,sBike))
end
 
local v, r = getCreaturePosition(cid), t[item.itemid]
local s = r.s
local pos = {x = v.x, y = v.y, z = v.z}
if r then
if getPlayerStorageValue(cid, 25000) == 5 then
return
end
if getPlayerStorageValue(cid, 23000) == 5 then
return
end
 
if getPlayerStorageValue(cid, 17001) == 1 or getPlayerStorageValue(cid, 63215) == 1 or getPlayerStorageValue(cid, 17000) == 1 then
doPlayerSendCancel(cid, "You can't use bike while ride/fly/surf.")
return true
end
if getPlayerSlotItem(cid, CONST_SLOT_AMMO).uid == item.uid then
doPlayerSendCancel("Não está no slot correto")
return true
end
if getPlayerStorageValue(cid, s) <= 0 then
doCreatureSay(cid, r.text, 19)
setPlayerStorageValue(cid, s, 1)
BikeSpeedOn(cid,800)
if getPlayerSex(cid) == 1 then
doSetCreatureOutfit(cid, {lookType = 2293, lookHead = 0, lookAddons = 0, lookLegs = 0, lookBody = 0, lookFeet = 0}, -1) ---Female
else
doSetCreatureOutfit(cid, {lookType = 2292, lookHead = 0, lookAddons = 0, lookLegs = 0, lookBody = 0, lookFeet = 0}, -1) --- Male
end
 
elseif getPlayerStorageValue(cid, s) == 1 then
doCreatureSay(cid, r.dtext, 19)
setPlayerStorageValue(cid, s, 0)
BikeSpeedOff(cid)
return doRemoveCondition(cid, CONDITION_OUTFIT)
else
return doPlayerSendCancel(cid, 'You can\'t do this.')
end
else
return doPlayerSendTextMessage(cid,MESSAGE_STATUS_CONSOLE_BLUE, 'Report bugs in Bike system.')
end
end

Exemplo: Se sua velocidade for de 318 (velocidade real de um char Level 50) e você estiver usando a bicicleta (+20 níveis de velocidade), você terá a velocidade modificada para "338" (que é a velocidade real de um char Level 60). 

Fiz corrido, testa aí:
 

function onUse(cid, item, fromPosition, itemEx, toPosition)
	local sBike = 2547
	local speed = 20 -- speed que você quer extra
	local t = {
		[16689] = {article='a', name='Bike', text='', dtext='', s=9999, condition=bikeCondition},
	}
	
	function BikeSpeedOn(cid,nSpeed)
		setPlayerStorageValue(cid,sBike,getCreatureSpeed(cid))
		doChangeSpeed(cid,getCreatureSpeed(cid)+nSpeed)
	end
	
	function BikeSpeedOff(cid)
		doChangeSpeed(cid,-getCreatureSpeed(cid))
		doChangeSpeed(cid,getPlayerStorageValue(cid,sBike))
	end
	
	local v, r = getCreaturePosition(cid), t[item.itemid]
	local s = r.s
	local pos = {x = v.x, y = v.y, z = v.z}
	if r then
		if getPlayerStorageValue(cid, 25000) == 5 then
			return
		end
		if getPlayerStorageValue(cid, 23000) == 5 then
			return
		end
		
		if getPlayerStorageValue(cid, 17001) == 1 or getPlayerStorageValue(cid, 63215) == 1 or getPlayerStorageValue(cid, 17000) == 1 then
			doPlayerSendCancel(cid, "You can't use bike while ride/fly/surf.")
			return true
		end
		if getPlayerSlotItem(cid, CONST_SLOT_AMMO).uid == item.uid then
			doPlayerSendCancel("Não está no slot correto")
			return true
		end
		if getPlayerStorageValue(cid, s) <= 0 then
			doCreatureSay(cid, r.text, 19)
			setPlayerStorageValue(cid, s, 1)
			BikeSpeedOn(cid,speed)
			if getPlayerSex(cid) == 1 then
				doSetCreatureOutfit(cid, {lookType = 2293, lookHead = 0, lookAddons = 0, lookLegs = 0, lookBody = 0, lookFeet = 0}, -1) ---Female
		else
			doSetCreatureOutfit(cid, {lookType = 2292, lookHead = 0, lookAddons = 0, lookLegs = 0, lookBody = 0, lookFeet = 0}, -1) --- Male
		end
		
	elseif getPlayerStorageValue(cid, s) == 1 then
		doCreatureSay(cid, r.dtext, 19)
		setPlayerStorageValue(cid, s, 0)
		BikeSpeedOff(cid)
		return doRemoveCondition(cid, CONDITION_OUTFIT)
	else
		return doPlayerSendCancel(cid, 'You can\'t do this.')
		end
	else
		return doPlayerSendTextMessage(cid,MESSAGE_STATUS_CONSOLE_BLUE, 'Report bugs in Bike system.')
	end
end

 

@Nazo funcionando perfeitamente!